arch/alpha/include/asm/topology.h

   1 #ifndef _ASM_ALPHA_TOPOLOGY_H
   2 #define _ASM_ALPHA_TOPOLOGY_H
   3
   4 #include <linux/smp.h>
   5 #include <linux/threads.h>
   6 #include <asm/machvec.h>
   7
   8 #ifdef CONFIG_NUMA
   9 static inline int cpu_to_node(int cpu)
  10 {
  11         int node;
  12
  13         if (!alpha_mv.cpuid_to_nid)
  14                 return 0;
  15
  16         node = alpha_mv.cpuid_to_nid(cpu);
  17
  18 #ifdef DEBUG_NUMA
  19         BUG_ON(node < 0);
  20 #endif
  21
  22         return node;
  23 }
  24
  25 static inline cpumask_t node_to_cpumask(int node)
  26 {
  27         cpumask_t node_cpu_mask = CPU_MASK_NONE;
  28         int cpu;
  29
  30         for_each_online_cpu(cpu) {
  31                 if (cpu_to_node(cpu) == node)
  32                         cpu_set(cpu, node_cpu_mask);
  33         }
  34
  35 #ifdef DEBUG_NUMA
  36         printk("node %d: cpu_mask: %016lx\n", node, node_cpu_mask);
  37 #endif
  38
  39         return node_cpu_mask;
  40 }
  41
  42 extern struct cpumask node_to_cpumask_map[];
  43 /* FIXME: This is dumb, recalculating every time.  But simple. */
  44 static const struct cpumask *cpumask_of_node(int node)
  45 {
  46         int cpu;
  47
  48         cpumask_clear(&node_to_cpumask_map[node]);
  49
  50         for_each_online_cpu(cpu) {
  51                 if (cpu_to_node(cpu) == node)
  52                         cpumask_set_cpu(cpu, node_to_cpumask_map[node]);
  53         }
  54
  55         return &node_to_cpumask_map[node];
  56 }
  57
  58 #define pcibus_to_cpumask(bus)  (cpu_online_map)
  59 #define cpumask_of_pcibus(bus)  (cpu_online_mask)
  60
  61 #endif /* !CONFIG_NUMA */
  62 # include <asm-generic/topology.h>
  63
  64 #endif /* _ASM_ALPHA_TOPOLOGY_H */